Answer:
causes alteration
Explanation:
when one particular species that should perform a particular function is removed it will change the ecosystem
Includes all of the living organisms on earth so it should be glaciers
The porcupine is a rodent with an unusual trait. Porcupines have sharp spines or quills that help protect it against its predators. This trait is different from other rodents because of its needle like quills. This animal is also similar to that of a hedgehogs.
9-3. 3-1 or otherwise it is put as 9:3:3:1